Triggerable holding device for a securing strap of an airbag, and housing for an airbag

Patent metadata

Field	Value
Publication number	US-11351952-B2
Application number	US-201916962901-A
Country	US
Kind code	B2
Filing date	Jan 15, 2019
Priority date	Jan 19, 2018
Publication date	Jun 7, 2022
Grant date	Jun 7, 2022

Abstract

The invention relates to a releasable retaining device (10) for a tether (16) of an airbag, comprising a retainer (12), a slit (14) for receiving the tether (16), a blocking member (18) made from metal which is displaceable between a blocking position in which it maintains the tether (16) blocked in the slit (14) and a release position in which the tether (16) is released, and comprising a pyrotechnical igniter (20) coupled to the blocking member (18) such that, upon activation of the igniter (20), the blocking member is displaced from the blocking position to the release position. Moreover, a housing (32) including a retaining device (10) for an airbag is provided.

First claim

The invention claimed is:

1. A releasable retaining device ( 10 ) for a tether ( 16 ) of an airbag, comprising a retainer ( 12 ), a blocking member ( 18 ) made from metal which is movably supported in the retainer ( 12 ) and which is displaceable between a blocking position in which it maintains the tether ( 16 ) blocked and a release position in which the tether ( 16 ) is released, and comprising a pyrotechnical igniter ( 20 ) coupled to the blocking member ( 18 ) such that, upon activation of the igniter ( 20 ), the blocking member is displaced from the blocking position to the release position, wherein the blocking member ( 18 ) comprises a sleeve ( 22 ) which, apart from the pyrotechnical igniter, is free from built-in parts in its interior.

2. The retaining device ( 10 ) according to claim 1 , wherein the blocking member ( 18 ) is supported to be linearly movable or to be pivotable.

3. The retaining device ( 10 ) according to claim 1 , wherein the blocking member ( 18 ) comprises a sleeve ( 22 ), a hook ( 60 ) or a piston rod ( 52 ) including a piston ( 45 , 64 ).

4. The retaining device ( 10 ) according to claim 1 , wherein the igniter ( 20 ) is tightly connected to the blocking member ( 18 ).

5. The retaining device ( 10 ) according to claim 1 , wherein the igniter ( 20 ) is tightly connected to the retainer ( 12 ).

6. The retaining device ( 10 ) according to claim 1 , wherein an end of the sleeve ( 22 ) on the far side of the igniter ( 20 ) is received to be at least substantially pressure-tightly movable within the retainer ( 12 ).

7. The retaining device ( 10 ) according to claim 1 , wherein venting holes ( 70 ) are disposed in the retainer ( 12 ).

8. The retaining device ( 10 ) according to claim 1 , wherein the retainer ( 12 ) includes a projection ( 26 ) protruding into the interior of the sleeve ( 22 ).

9. The retaining device ( 10 ) according to claim 1 , wherein the blocking member ( 18 ) and/or the igniter ( 20 ) is/are captively enclosed in the retainer ( 12 ).

10. The retaining device ( 10 ) according to claim 1 , wherein the igniter ( 20 ) is releasably or tightly connected to the retainer ( 12 ).

11. The retaining device ( 10 ) according to claim 10 , wherein the igniter ( 20 ) is connected to the retainer ( 12 ) by means of a snap-fit ( 28 ).

12. The retaining device ( 10 ) according to claim 1 , wherein the retainer has a slit ( 14 ) for receiving the tether ( 16 ), the sleeve ( 22 ) being received on both sides of the slit ( 14 ) in a seat ( 30 ).

13. A housing ( 32 ) for an airbag, comprising a retaining device ( 10 ) according to claim 1 , wherein the retaining device ( 10 ) is disposed on an outer wall of the housing ( 32 ).

14. The housing ( 32 ) for an airbag according to claim 13 , wherein the retaining device ( 10 ) is disposed on the outer face of the housing ( 32 ) and the housing ( 32 ) includes a through-opening ( 38 ) for the tether ( 16 ) so that the tether ( 16 ) can extend to the retaining device ( 10 ).

15. The housing ( 32 ) according to claim 13 , wherein the retaining device ( 10 ) is clipped to the housing ( 32 ).

16. The housing ( 32 ) according to claim 13 , wherein a safety catch is provided for the igniter ( 20 ).

Assignees

• Zf Automotive Germany Gmbh
• Trw Polska Sp Zo O
• Zf Automotive Germany
• Zf Automotive Systems Poland Sp Zo O

Inventors

• Debler Jens
• Sadowski Maciej

Classifications

• B60R21/2338 Primary

  Tethers · CPC title

• B60R2021/23388

  having ends which are movable or detachable during deployment · CPC title